Steam generator



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n.. DE sANTas STEAM GENERATOR Filed May 20, 1922 2 Sheets-Sheet l S :It :i: fi?? v b() I-- O ...#71, ATTORNEYS LSZAS? Dec, 3Q? 1924?.

L.. DE SANTIIS STEAM GENERATOR Filed May 20, 19,22 2 Sheets-Shea?. 2

NORA/EVS Patented Dec. 30, 1924.

UNITED STATES LOUIS DE SANTIS, OF NEW YORK, N. Y.

STEAM GENERATOR.

j Application led May 20, 1922. Serial No. 562,348.

To all 'whom t may conce/rn:

Be it known that I, Louis DE SANTis, a citizen of the United States, and a resident of the city of New York, borough of the Bronx, in the coiuity of Bronx andv State of New York, have invented a new and Improved Steam Generator, of which the following is a full, clear, and exact description.

rlhis invention has relation to power generating plants and refers more particularly to a steam boiler which is especially designed as a small portable plant for the generation of steam power, to' operate motor vehicles such as automobiles, speed boats, or the like.

@ne of the principal objects of the present invention, is to provide a light, safe, and durable boiler construction for quickly producing a steam pressure to be used in the driving of a reciprocating or turbine engine'.

As a further object the invention resides in the provision of a steam generating plant in which the water supply is initially heated prior to its introduction to the boiler and .in which the steam is superheated during its passage from the steam dome to its point of usage. j s

A further object resides in the provision of a boiler construction in which all of the joints, seams, heads and water and fire tubes are of a like material and welded together to produce an integral or homogeneous structure, insuring a maximum of efficiency and strength.

As a still further obj ect the invention provides a portable boiler including means for preventing priming due to tilting or canting of the same 'to any degree to which it may possibly be subjected.

The invention furthermore contemplates a steam generating apparatus which is comparatively simple in its construction, inexpensive to manufacture, and which is thoroughly reliable and highly eiicient in its purpose.

With the above recited and other objects in View, the invention resides in the novel construction set forth in the following speciication, particularly pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that the right is reserved to embodiments other than those actually illustrated herein` to the full extent indicated b the general meaning of the terms in whic the claims are expressed.

ln the drawings- Figure 1 is a vertical longitudinal sectional view through a steam generating plant constructed Ain accordance with the invention. i

`Fig. 2 is a transverse sectional View therethrough taken approximately on the line 2--2 of Fig. l. v

Fig. 3 is an end view of the apparatus.

Referring to the drawings by characters of reference the steam generating plant em.- bodies anouter casing 10 within which a pairof superposed drums 11 and 12 are arranged, the lower drum 11 constituting an initial water receiving and heating ele-ment and the upper drum a secondary water receiving and boiler element. The drums extend longitudinally beyond the forward and rear end walls 13 and 14 of the outer casing 10. The upper end of the rear wall 14 terminates an appreciable distance below the upper end of the outer casing to provide a space or passage 15 which establishes communication between the interior of the outer casing and flue 16 which is deiined by an end covering plate 17 secured over the rear end of the casing and drums. The lower drum 11 is closed at its opposite ends by headers 18 and 19 through which a central enlarged fire tube 2O and circuinferentially spaced reduced fire tubes 21 extend longitudinally of the drum. The

lower peripheral wall of the drum 11 is depressed to provide a longitudinally extending trough 22 which is closedA at its opposite ends by the depending extensions 23 of the headers 18 and 19 and said extensions 23 are provided with hand holes 24 which are closed by removable cover plates 25 whereby access may be had to the interior of the trough 22 to admit of the cleaning out and removal of sediment or mud which collects therein, a blow-od' pipe 26 being threaded into the trough at the longitudinal center thereof. The lower portion of the casing 10 defines a receiving space 27 for the tiring elements which is preferably in the nature of an oil or gasoline burner o-r other suitable firing means of this character. Access is had to the rel ceiving space 27 through the door openings 28 in the forward rear walls 13 and 14, which openings are closed by the doors 29. The drum 11 is connected to the drum 12 through the medium of vertical pipes 30 adjacent the opposite ends of the drums,

the same extending through the upper portion of the wall of the drum 11 and through the lower portion of the wall of the drinn 12. The drums are further connected to each other by water conduit tubes 31 which lead from the trough of the lower drum to the lower side portions of the wall of the upper drum, said tubes extending through the heating space or chamber delined between the outer lcasing l() and the exterior of the drum Walls. As specifically illustrated the outer casing 10 is open at its upper end and the drum 12 sets within the opening and constitutes a closure therefor. The upper drum or boiler element 12 supports at the longitudinal and transverse center an upstanding steam dome 32 with which communication is established by means of the perforations 33 in the drum wall. In order to prevent the possible entrance of water to the steam dome due to tilting or canting of the boiler, baille plates 34, 35, and 36 are provided. The 'baille plate 34 extends radially inward from the inner periphery of the drum wall adjacent its upper end and is provided with a baille flange 37 at its free lower edge which extends over the free lower end of the baille plate 35 and is arranged parallel thereto in spaced relatio-n to the'plate 35.` The baille plate 35 extends radially inward from the upper portion of the inner periphery of the drum 12 and its free edge' terminates in spaced relation to the baille plate 34 and is provided with an angular upturned flange 38 which is arranged in parallel spaced relation to the baffle plate 34. The uppermost baille plate 36 is supported in a horizontal plane by means of rods 39 trom the upper portion of the drum wall 12 and the same is provided at one side edge with a depending angularly disposed baille flange 40 which terminates in horizontally aligned spaced relation with respect to the free edge of the flange 38 of the baille plate 35. The steam dome 32 is provided with an outlet withwhich a conveyor pipe 41 communicates, said pipe being provided adjacent the dome with a safety' valve 42 and a shut-oill valve 43. The conveyor pipe 41 leads to and connects with a sinuous coil 44 arranged in a super-heater drum 45 with which the fire tubes 20 and 21 communicate at their outlet end and from which the vertical smoke stack. 46 projects upwardly to carry oil' the smoke and unburned gases or other particles of combustion. At their opposite ends the re tubes 20 and 21 communicate with the flue 16. 'Ihe sinuous coil 44 connects at its opposite ends to the conveyor pipe 47 yfrom which the steam is conveyed to its point of usage. Y

In use andoperation of the apparatus the water is supplied to the initial water-receiving drum 11 by a supply or eed pipe 48 which enters the drum through the depending extension 23 of the realheader 19, it being understood that the lower drum is entirely filled initially with water while the upper drum is filled to a predetermined level up to a point slightly below the half-way mark thereof substantially as illustrated. Heat generated by a firing element arranged in the receiving space 27 operates to heat the water contained in the lower drum initially to a predetermined degree, which is then conveyed through the pipes 30 to the upper drum. Simultaneously a portion of the water will be heated and conveyed from the trough 22 through the water conduit tubes 31. The heat or fire after passing around the drum 11 and actingon the lower or bottom portion of the drum 12 will pass through the space or passage 15 and will be drawn by the draft from the stack downwardly through the b -pass 16, through the lire tubes 20 and 2 intothe super-heater drum 45 and thence out the stack to again subject the water in the drumV 11 to a further heating action prior toits ascension to the upper drum or boiler. lIt is obvious that the steam which is generated above t-he water level o1' the upper drum or boiler element v12 will pass between the baille plates 34, 35 and 36, through the perforations or openings 33 into the steam dome 32. The steam is then led or conveyed by the conveyor pipe 41 to the sinuous coil 44 in the super-heater drum 45 where the same will be subjected to the superheating action and thence deliveredto the conveyor pipe 47. In' event of tilting or canting of the structure, the baille plates 34, 35 and 36, together with their flanged extremities 37, 38 and 40 will operate to positively prevent priming. All of the seams, joints, headers, walls and water and fire tubes are constructed of a similar material and are welded together to produce a homogeneous or integral structure which insures against leakage and tends to promote a maximum of efficiency and strength.

If desired a forced draft may be employed for advancing the heat through the heating `spaces and chambers and out of the stack or exhaust.A

I claim:

1. A steam generator comprising a casing having firing means therein, superposed communicating drums mounted within the casing, the upper drum forming a closure for the top of the casing, a flue formed at one end of the casing at the ends of the drums, a flue chamber formed at the opposite end of the casing adjacent the end of one of the drums, and heating tubes longitudinally mounted through said last mentioned drum and communicating at one end with the llue and at the other end with the liue chamber.

2. 'A steam generator comprising-a casing having iiring means therein, superupper drum posed communicating drums mounted within the casing, a flue formed at one end of the casing between the ends of the drums and the casing wall, one of said drums having a constricted area adjacent the ring means in the casing, and conduits leading from said constricted area around the lower drum into the upper drum.

3. A steam generator comprising a casing having firing means therein, superposed communicating drums mounted within the casing, the upper drum forming a closure for the top of the casing, a lue formed at one end of the casing at the ends of the drums, one of said drums having a constrict ed area adjacent the firing means, conduits leading from said constricted area into the around the lower drum, viieating tubes mounted through the lower drum and communicating with said flue, the upper drum forming a closure for the top of the casing wherebyv heat will be directed down through the ue and out through the heating tubes within the lower drum after contact with the outer surface of the drums and conduits.

4. A steam generator comprising a casing having ring means therein, superposed communicating drums adapted to contain water mounted in said casing and providing a flue in conjunction with the walls of the casing, heating tubes mounted through the lower drum whereby heat is circulated against the surface of the drums through the ue and the heating tubes within the drums, conduits leading from the portion of the lower drum adjacent the firing means into the upper drum, a steam dome mounted on the upper drum and baille plates mounted within the upper drum beneath the steam dome to preent the entrance of water into the steam ome.

LOUIS DE SANTIS. 

